Calculate the mass of ammonia that contains a trillion hydrogen atoms.

              9.4 × 10⁻¹² g of NH₃

Solution:

Step 1: Calculate Number of NH₃ Molecules containing 1 Trillion Hydrogen Atoms:

As,

                  3 Hydrogen Atoms are present in  =  1 Molecule of NH₃

So,

    1 × 10¹² Hydrogen Atoms will be present in  =  X Molecules of NH₃

Solving for X,

                      X  =  (1 × 10¹² × 1) ÷ 3

                      X =  3.33 × 10¹¹ Molecules of NH₃

Step 2: Calculate Moles of NH₃:

As,

                          Moles  =  Number of Molecules ÷ 6.022 × 10²³

Putting value,

                          Moles  =  3.33 × 10¹¹ Molecules ÷ 6.022 × 10²³

                          Moles  = 5.53 × 10⁻¹³ mol

Step 3: Calculate Mass of NH₃:

As,

                          Moles  =  Mass ÷ M.Mass

Solving for Mass,

                          Mass  =  Moles ×  M.Mass

Putting values,

                          Mass  =  5.53 × 10⁻¹³ mol × 17 g.mol⁻¹

                          Mass =  9.4 × 10⁻¹² g of NH₃

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.